As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THE LEFT HAND PROPELLER FAILED TO COME OUT OF FEATHER WHEN SELECTED, DURING TAXI. THE AIRCRAFT RETURNED TO THE GATE. MAINTENANCE INSPECTED AND REPLACED THE LEFT HAND PROPELLER SPEED SENSOR, IN ACCORDANCE WITH DORNIER MAINTENANCE MANUAL 77-12-11. OPERATIONAL CHECKS WERE COMPLETED, AND THE AIRCRAFT WAS RETURNED TO SERVICE.